Nadine Coyle
Fine on her own, a powerful and dis­tinct­ive vocalist.

Boyz II Men
Fine on their own, a respected and popular male vocal harmony group of yes­teryear.

Take That's 'Back For Good'
Fine on its own, a moving 'n' melodic con­tem­por­ary classic.

Put all three together
Oh dear.

httpv://www.youtube.com/watch?v=2LPYQKj9Tg4

Don't forget, readers — someone, somewhere thought this would be a good idea. Perhaps it's a joke?

PROPER SONG SHARPISH PLEASE NADINE.

EDIT: YouTube have, perhaps as a public health measure, removed the audio from the above clip. Basically imagine Boyz II Men and Nadine Coyle doing a really bad cover version of 'Back For Good' and you're along the right lines.